A screening machine for rice processing
By using a screening bucket driven by a vibration motor and a scraper assembly driven by a micro motor, the problems of incomplete impurity removal and low grading efficiency in traditional rice screening machines are solved. This achieves efficient impurity separation and rice grading by size, improving the purity and screening efficiency of rice.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA MINGXIANG GRAIN & OIL CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional rice processing screening machines are inefficient because they cannot effectively remove impurities during screening and are not convenient for grading rice according to size.
A rice processing screening machine was designed, comprising a screening bucket driven by a vibrating motor and a scraper assembly driven by a micro motor. Through the cooperation of vibration and scraper, rice and impurities are separated into layers and graded by size, and screening is carried out using sieve holes of different diameters.
This improved the purity and germination rate of rice, enhanced screening efficiency, prevented impurities from accumulating and clogging, and achieved efficient screening and grading.
Smart Images

Figure CN224346358U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice screening technology, specifically a screening machine for rice processing. Background Technology
[0002] Rice processing screening machines are mainly used to separate impurities from rice, such as stones, straw, dust, and empty seeds, thereby improving the purity and germination rate of rice.
[0003] Traditional rice processing screening machines often fail to thoroughly remove impurities from the rice during the screening process. Furthermore, they are not suitable for grading rice grains by size, requiring rework after screening, which wastes time and reduces efficiency. Therefore, improvements are needed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a rice processing screening machine that has the advantages of good screening effect and the ability to grade rice according to its size, thus solving the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a rice processing screening machine, comprising a main frame, an auxiliary component at the top of the main frame, an installation block fixedly installed at the bottom of the main frame, a rotating handle rotatably connected to the inner wall of the installation block, and an installation plate installed at the other end of the rotating handle, a screening hopper fixedly mounted on the outer wall of the installation plate, a controller fixedly mounted on the outer wall of the main frame, a screening component at the bottom of the screening hopper, a screen one installed on the top of the inner wall of the screening hopper, a screen hole one opened at the top of the screen one, a screen two installed at the bottom of the screen one, a screen hole two opened at the top of the screen two, a discharge port one and a discharge port two respectively installed at the bottom of the screen hole two, a discharge port three fixedly installed at the end of the screening hopper away from the screening component, and a collection box one, a collection box two, and a collection box three respectively installed on the outer wall of the main frame.
[0006] As a preferred technical solution of this utility model: there are several sieve holes one and several sieve holes two, and several sieve holes one and several sieve holes two are evenly distributed on the top of sieve mesh one and sieve mesh two. Both sieve mesh one and sieve mesh two are installed in an inclined manner on the inner wall of the screening hopper. The diameter of sieve hole one is larger than the diameter of sieve hole two.
[0007] As a preferred technical solution of this utility model: the auxiliary component includes a micro motor, the power output shaft of the micro motor is fixedly fitted with a threaded rod through a coupling, the outer wall of the threaded rod is threadedly connected to a slider, the top of the slider is fixedly installed with a connecting plate, the bottom of the connecting plate is fixedly fitted with a scraper, and a blocking plate is installed at the end of the threaded rod away from the micro motor.
[0008] As a preferred technical solution of this utility model: the number of micro motors, threaded rods, sliders and baffles are all two, and the two micro motors, threaded rods, sliders and baffles are symmetrically distributed at both ends of the connecting plate. The bottom of the scraper is sharp and the bottom of the scraper is in contact with the top of the screen. The micro motor is electrically connected to the controller and the micro motor is fixedly installed on the top of the main frame.
[0009] As a preferred technical solution of this utility model: the screening component includes a base, a vibration motor is fixedly installed on the top of the base, the power output shaft of the vibration motor is fixedly fitted with a drive wheel through a coupling, one end of a belt is drivenly connected to the outer wall of the drive wheel, and the other end of the belt is drivenly connected to a driven wheel, a rotating shaft is fixedly installed at the center of the driven wheel, a vibration wheel is fixedly installed on the outer wall of the rotating shaft, one end of a vibration handle is installed on the outer wall of the vibration wheel, and a connecting block is rotatably sleeved on the other end of the vibration handle.
[0010] As a preferred technical solution of this utility model: the vibration motor and the controller are electrically connected, the base is fixedly installed on the inner wall of the main frame, the end of the connecting block away from the driven wheel is fixedly installed on the outer wall of the screening hopper, and the outer wall of the rotating shaft is installed on the outer wall of the main frame through a limiting seat.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. This rice processing screening machine, through a controller signal, starts the vibrating motor, causing the drive wheel to rotate. This, in turn, drives the driven wheel via a belt, causing the shaft to rotate synchronously. The vibrating wheel then drives the vibrating handle to oscillate, allowing the screening bucket to separate rice from impurities through vibration. This improves seed quality, thereby increasing field emergence rate and crop yield. It also facilitates subsequent rice separation, enabling the device to grade rice according to size, providing high-quality raw materials for subsequent planting or processing. Furthermore, it achieves highly efficient rice screening, solving the problem of incomplete impurity removal in traditional equipment.
[0013] 2. This rice processing screening machine, through a signal emitted by the controller, can start a micro motor, enabling the threaded rod to rotate and drive the slider to move along the direction of the threaded rod. This, in turn, causes the scraper to slide on top of the screen, pushing the rice and impurities that have not passed through the screen holes onto the top of the screen. This allows the rice to enter the collection box through the discharge port, effectively preventing excessive accumulation on top of the screen and causing blockage. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the other side of the structure of this utility model;
[0016] Figure 3 This is a schematic cross-sectional view of the present invention.
[0017] Figure 4 This is a schematic diagram of the auxiliary component structure of this utility model;
[0018] Figure 5 This is a schematic diagram of the screening component structure of this utility model.
[0019] In the diagram: 1. Main frame; 2. Auxiliary components; 3. Mounting block; 4. Rotating handle; 5. Mounting plate; 6. Screening hopper; 7. Controller; 8. Screening assembly; 9. Screen one; 10. Screen hole one; 11. Screen two; 12. Screen hole two; 13. Discharge port one; 14. Discharge port two; 15. Discharge port three; 16. Collection box one; 17. Collection box two; 18. Collection box three;
[0020] 201. Miniature motor; 202. Threaded rod; 203. Slider; 204. Connecting plate; 205. Scraper; 206. Blocking plate;
[0021] 801. Base; 802. Vibration motor; 803. Drive wheel; 804. Belt; 805. Driven wheel; 806. Shaft; 807. Vibration wheel; 808. Vibration handle; 809. Connecting block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1 - Figure 5 A rice processing screening machine includes a main frame 1, an auxiliary component 2 on the top of the main frame 1, an installation block 3 fixedly installed on the bottom of the main frame 1, a rotating handle 4 rotatably connected to the inner wall of the installation block 3, and an installation plate 5 installed on the other end of the rotating handle 4. A screening hopper 6 is fixedly mounted on the outer wall of the installation plate 5. A controller 7 is fixedly mounted on the outer wall of the main frame 1. A screening component 8 is provided at the bottom of the screening hopper 6. A screen 9 is installed on the top of the inner wall of the screening hopper 6. A screen hole 10 is opened on the top of the screen 9. A screen 11 is provided at the bottom of the screen 9. A screen hole 12 is opened on the top of the screen 11. A discharge port 13 and a discharge port 24 are respectively installed at the bottom of the screen hole 212. A discharge port 3 15 is fixedly installed at the end of the screening hopper 6 away from the screening component 8. A collection box 16, a collection box 27, and a collection box 3 18 are respectively installed on the outer wall of the main frame 1.
[0024] In the above structure, the mounting block 3 and its installation position characteristics enable the mounting block 3 to limit and fix the screening hopper 6. Furthermore, the rotating handle 4 enables the mounting plate 5 to drive the screening hopper 6 to reciprocate, thereby facilitating the screening of rice.
[0025] In a preferred embodiment: there are several sieve holes 10 and several sieve holes 12, and the several sieve holes 10 and several sieve holes 12 are evenly distributed on the top of sieve mesh 9 and sieve mesh 11. Both sieve mesh 9 and sieve mesh 11 are installed in an inclined manner on the inner wall of the screening hopper 6. The diameter of sieve hole 10 is larger than the diameter of sieve hole 12.
[0026] In the above structure, the characteristic that the diameter of sieve hole 10 is larger than that of sieve hole 12 allows the device to separate rice from impurities according to particle size. Rice smaller than the diameter of sieve hole 10 and sieve hole 12 passes through sieve 19 and sieve 21, while larger impurities remain on the top of sieve 19 and enter the inner wall of discharge port 13 through discharge port 315 for recycling. Rice passing through sieve hole 10 falls into the inner wall of collection box 27 through discharge port 13, while rice passing through sieve hole 10 and sieve hole 12 falls into the inner wall of collection box 16 through discharge port 214. This allows the device to complete the screening of rice according to size.
[0027] In a preferred embodiment: the auxiliary component 2 includes a micro motor 201, the power output shaft of the micro motor 201 is fixedly fitted with a threaded rod 202 via a coupling, the outer wall of the threaded rod 202 is threadedly connected to a slider 203, the top of the slider 203 is fixedly mounted with a connecting plate 204, the bottom of the connecting plate 204 is fixedly fitted with a scraper 205, and a blocking plate 206 is installed at the end of the threaded rod 202 away from the micro motor 201.
[0028] In a preferred embodiment: there are two micro motors 201, two threaded rods 202, two sliders 203 and two baffles 206, and the two micro motors 201, two threaded rods 202, two sliders 203 and two baffles 206 are symmetrically distributed at both ends of the connecting plate 204. The bottom of the scraper 205 is sharp and the bottom of the scraper 205 is in contact with the top of the screen 9. The micro motor 201 is electrically connected to the controller 7 and the micro motor 201 is fixedly installed on the top of the main frame 1.
[0029] In the above structure, the micro motor 201 can be started by the controller 7, which enables the threaded rod 202 to rotate and drive the slider 203 to move along the direction of the threaded rod 202. This causes the scraper 205 to slide on the top of the screen 9, allowing the scraper 205 to push the rice and impurities that have not passed through the screen holes 10 placed on the top of the screen 9, so that they can enter the collection box 18 through the discharge port 15. This effectively prevents excessive accumulation on the top of the screen 9 and blockage.
[0030] In a preferred embodiment: the screening component 8 includes a base 801, a vibration motor 802 is fixedly mounted on the top of the base 801, the power output shaft of the vibration motor 802 is fixedly fitted with a drive wheel 803 via a coupling, one end of a belt 804 is drivenly connected to the outer wall of the drive wheel 803, and the other end of the belt 804 is drivenly connected to a driven wheel 805, a rotating shaft 806 is fixedly mounted at the center of the driven wheel 805, a vibration wheel 807 is fixedly mounted on the outer wall of the rotating shaft 806, one end of a vibration handle 808 is mounted on the outer wall of the vibration wheel 807, and a connecting block 809 is rotatably sleeved on the other end of the vibration handle 808.
[0031] In a preferred embodiment: the vibration motor 802 is electrically connected to the controller 7, the base 801 is fixedly installed on the inner wall of the main frame 1, the end of the connecting block 809 away from the driven wheel 805 is fixedly installed on the outer wall of the screening hopper 6, and the outer wall of the rotating shaft 806 is installed on the outer wall of the main frame 1 through a limiting seat.
[0032] In the above structure, the controller 7 sends a signal to start the vibration motor 802, which in turn enables the drive wheel 803 to rotate. The drive wheel 805 is driven to rotate via the belt 804, causing the shaft 806 to rotate synchronously. This, in turn, causes the vibration wheel 807 to drive the vibration handle 808 to shake, so that the screening hopper 6 can separate the rice from the impurities through vibration, thus facilitating the subsequent separation of the rice.
[0033] Working Principle: When using this device, the rice to be screened is poured onto the top of screen 9. At this time, the controller 7 sends a signal to start the vibrating motor 802, causing the drive wheel 803 to rotate. This, in turn, drives the driven wheel 805 via the belt 804, causing the rotating shaft 806 to rotate synchronously. The vibrating wheel 807 then drives the vibrating handle 808 to shake, causing the screening hopper 6 to vibrate and separate the rice from impurities. Because the diameter of screen hole 10 is larger than that of screen hole 12, the device can separate the rice from impurities by particle size. Rice smaller than the diameters of screen holes 10 and 12 passes through screens 9 and 11, while larger impurities remain on top of screen 9 and are collected through outlet 15 into the inner wall of outlet 13. Rice passing through screen hole 10... Rice falls through outlet 13 onto the inner wall of collection box 17, while rice that passes through sieve holes 10 and 12 falls through outlet 24 into the inner wall of collection box 16. This allows the device to screen rice according to size. After screening, the controller 7 sends a signal to start the micro motor 201, causing the threaded rod 202 to rotate and move the slider 203 along the direction of the threaded rod 202. This causes the scraper 205 to slide on top of sieve 9, pushing the rice and impurities that did not pass through sieve holes 10 onto the top of sieve 9. This allows the rice to enter the collection box 18 through outlet 315, effectively preventing excessive accumulation on top of sieve 9 and causing blockage. This completes the screening of rice.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A screening machine for rice processing, comprising a main frame (1), characterized in that: The main frame (1) has an auxiliary component (2) at its top and an installation block (3) fixedly installed at its bottom. The inner wall of the installation block (3) is rotatably connected to one end of a rotating handle (4), and the other end of the rotating handle (4) is fitted with an installation plate (5). The outer wall of the installation plate (5) is fixedly fitted with a screening hopper (6). The outer wall of the main frame (1) is fixedly fitted with a controller (7). The bottom of the screening hopper (6) has a screening component (8), and the top of the inner wall of the screening hopper (6) is fitted with a screen (9). The top of the screen (9) is provided with screen hole 1 (10), the bottom of the screen (9) is provided with screen 2 (11), the top of the screen 2 (11) is provided with screen hole 2 (12), the bottom of the screen hole 2 (12) is provided with discharge port 1 (13) and discharge port 2 (14), the end of the screening bucket (6) away from the screening component (8) is fixedly provided with discharge port 3 (15), and the outer wall of the main frame (1) is provided with collection box 1 (16), collection box 2 (17) and collection box 3 (18).
2. The rice processing screening machine according to claim 1, characterized in that: There are several sieve holes one (10) and several sieve holes two (12), and several sieve holes one (10) and several sieve holes two (12) are evenly distributed on the top of sieve mesh one (9) and sieve mesh two (11). The sieve mesh one (9) and sieve mesh two (11) are installed in an inclined manner on the inner wall of the screening hopper (6). The diameter of sieve hole one (10) is larger than the diameter of sieve hole two (12).
3. The rice processing screening machine according to claim 1, characterized in that: The auxiliary component (2) includes a micro motor (201), the power output shaft of the micro motor (201) is fixedly fitted with a threaded rod (202) via a coupling, the outer wall of the threaded rod (202) is threadedly connected to a slider (203), the top of the slider (203) is fixedly fitted with a connecting plate (204), the bottom of the connecting plate (204) is fixedly fitted with a scraper (205), and a baffle plate (206) is installed at the end of the threaded rod (202) away from the micro motor (201).
4. A rice processing screening machine according to claim 3, characterized in that: The number of micro motors (201), threaded rods (202), sliders (203) and baffles (206) is two each, and the two micro motors (201), threaded rods (202), sliders (203) and baffles (206) are symmetrically distributed at both ends of the connecting plate (204). The bottom of the scraper (205) is sharp, and the bottom of the scraper (205) is in contact with the top of the screen (9). The micro motor (201) is electrically connected to the controller (7), and the micro motor (201) is fixedly installed on the top of the main frame (1).
5. A rice processing screening machine according to claim 1, characterized in that: The screening component (8) includes a base (801), a vibration motor (802) is fixedly installed on the top of the base (801), the power output shaft of the vibration motor (802) is fixedly fitted with a drive wheel (803) through a coupling, one end of a belt (804) is drivenly connected to the outer wall of the drive wheel (803), and the other end of the belt (804) is drivenly connected to a driven wheel (805), a rotating shaft (806) is fixedly installed at the center of the driven wheel (805), a vibration wheel (807) is fixedly installed on the outer wall of the rotating shaft (806), one end of a vibration handle (808) is installed on the outer wall of the vibration wheel (807), and the other end of the vibration handle (808) is rotatably sleeved with a connecting block (809).
6. A rice processing screening machine according to claim 5, characterized in that: The vibration motor (802) is electrically connected to the controller (7), the base (801) is fixedly installed on the inner wall of the main frame (1), the end of the connecting block (809) away from the driven wheel (805) is fixedly installed on the outer wall of the screening hopper (6), and the outer wall of the rotating shaft (806) is installed on the outer wall of the main frame (1) through the limiting seat.